Viewing archive of Monday, 13 April 2020

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2020 Apr 13 1231 UTC

SIDC Forecast

Solar flares

Quiet conditions (<50% probability of C-class flares)

Geomagnetism

Quiet (A<20 and K<4)

Solar protons

Quiet

	10cm flux	Ap
13 Apr 2020	070	005
14 Apr 2020	070	007
15 Apr 2020	070	007

Bulletin

The Sun was spotless. Solar activity was at very low levels and is expected to remain so.

The greater than 10 MeV proton flux and the greater than 2 MeV electron flux were at nominal values and are expected to remain so.

No earth-directed coronal mass ejections (CMEs) were observed in available coronagraphic imagery.

Solar wind speed declined slightly from its initial values around 450 km/s to vary between 390 and 430 km/s during most of the period (DSCOVR). Bz varied between -4 and + 4 nT. The direction of the interplanetary magnetic field (phi angle) started out variable, but turned to mostly sunward directions (negative sector) after 21UT.

Geomagnetic activity was at quiet to unsettled levels and is expected to remain so during the next few days, as the earth environment may encounter the slightly enhanced wind streams from some small and patchy coronal holes.

Today's estimated international sunspot number (ISN): 000, based on 22 stations.

Solar indices for 12 Apr 2020

Wolf number Catania	///
10cm solar flux	071
AK Chambon La Forêt	012
AK Wingst	008
Estimated Ap	007
Estimated international sunspot number	000 - Based on 32 stations

Noticeable events summary

Provided by the Solar Influences Data analysis Center© - SIDC - Processed by SpaceWeatherLive

All times in UTC

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